US4628055A - Method for treating allergic reactions and compositions therefore - Google Patents
Method for treating allergic reactions and compositions therefore Download PDFInfo
- Publication number
- US4628055A US4628055A US06/661,017 US66101784A US4628055A US 4628055 A US4628055 A US 4628055A US 66101784 A US66101784 A US 66101784A US 4628055 A US4628055 A US 4628055A
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- US
- United States
- Prior art keywords
- carbon atoms
- structural formula
- compound
- alkyl
- hydrogen
- Prior art date
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- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 206010020751 Hypersensitivity Diseases 0.000 title claims abstract description 9
- 239000000203 mixture Substances 0.000 title description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 67
- 241000124008 Mammalia Species 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 121
- 239000001257 hydrogen Substances 0.000 claims description 36
- 229910052739 hydrogen Inorganic materials 0.000 claims description 36
- 125000000217 alkyl group Chemical group 0.000 claims description 30
- 150000002431 hydrogen Chemical group 0.000 claims description 24
- 125000001589 carboacyl group Chemical group 0.000 claims description 16
- 150000002367 halogens Chemical group 0.000 claims description 13
- 125000003545 alkoxy group Chemical group 0.000 claims description 12
- 229910052736 halogen Inorganic materials 0.000 claims description 12
- 125000003342 alkenyl group Chemical group 0.000 claims description 11
- 125000000304 alkynyl group Chemical group 0.000 claims description 11
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 150000001768 cations Chemical class 0.000 claims description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 9
- -1 hydroxy, benzyloxy, amino, sulfamyl Chemical group 0.000 claims description 9
- 125000004423 acyloxy group Chemical group 0.000 claims description 8
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 8
- 230000003266 anti-allergic effect Effects 0.000 claims description 7
- 125000004990 dihydroxyalkyl group Chemical group 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 5
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 125000005034 trifluormethylthio group Chemical group FC(S*)(F)F 0.000 claims description 4
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 claims description 3
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical group [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 claims description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 3
- 125000000392 cycloalkenyl group Chemical group 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 2
- 101150108015 STR6 gene Proteins 0.000 claims 1
- 239000003937 drug carrier Substances 0.000 claims 1
- 208000006545 Chronic Obstructive Pulmonary Disease Diseases 0.000 abstract description 10
- 150000005058 1,8-naphthyridines Chemical class 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000000243 solution Substances 0.000 description 20
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 18
- 239000000047 product Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000011541 reaction mixture Substances 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- 239000007787 solid Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000001953 recrystallisation Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 7
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 208000006673 asthma Diseases 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000003826 tablet Substances 0.000 description 5
- 206010006451 bronchitis Diseases 0.000 description 4
- 239000002775 capsule Substances 0.000 description 4
- SHZIWNPUGXLXDT-UHFFFAOYSA-N ethyl hexanoate Chemical compound CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- XTQQEFBWUFUXSZ-UHFFFAOYSA-N methyl 2-anilinopyridine-3-carboxylate Chemical compound COC(=O)C1=CC=CN=C1NC1=CC=CC=C1 XTQQEFBWUFUXSZ-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- LKJRSIKJPNFWNO-UHFFFAOYSA-N (2-oxo-1-phenyl-3-prop-2-enyl-1,8-naphthyridin-4-yl) acetate Chemical compound C12=NC=CC=C2C(OC(=O)C)=C(CC=C)C(=O)N1C1=CC=CC=C1 LKJRSIKJPNFWNO-UHFFFAOYSA-N 0.000 description 3
- HYAGUMDMHFIZCX-UHFFFAOYSA-N 3-butyl-4-(2-hydroxyethoxy)-1-phenyl-1,8-naphthyridin-2-one Chemical compound O=C1C(CCCC)=C(OCCO)C2=CC=CN=C2N1C1=CC=CC=C1 HYAGUMDMHFIZCX-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 229920002261 Corn starch Polymers 0.000 description 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 3
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 3
- 239000004472 Lysine Substances 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MBBZMMPHUWSWHV-BDVNFPICSA-N N-methylglucamine Chemical compound CNC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO MBBZMMPHUWSWHV-BDVNFPICSA-N 0.000 description 3
- 230000000172 allergic effect Effects 0.000 description 3
- 208000010668 atopic eczema Diseases 0.000 description 3
- 239000008120 corn starch Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000002552 dosage form Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000010561 standard procedure Methods 0.000 description 3
- 239000008215 water for injection Substances 0.000 description 3
- WKYRBKKTPWIHNV-UHFFFAOYSA-N 1-phenyl-4-prop-2-enoxy-1,8-naphthyridin-2-one Chemical compound C12=NC=CC=C2C(OCC=C)=CC(=O)N1C1=CC=CC=C1 WKYRBKKTPWIHNV-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- LDLCZOVUSADOIV-UHFFFAOYSA-N 2-bromoethanol Chemical compound OCCBr LDLCZOVUSADOIV-UHFFFAOYSA-N 0.000 description 2
- 125000002941 2-furyl group Chemical group O1C([*])=C([H])C([H])=C1[H] 0.000 description 2
- 125000004105 2-pyridyl group Chemical group N1=C([*])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- FHUCBPRJJRSQFM-UHFFFAOYSA-N 3-anilinopyrazine-2-carboxylic acid Chemical class OC(=O)C1=NC=CN=C1NC1=CC=CC=C1 FHUCBPRJJRSQFM-UHFFFAOYSA-N 0.000 description 2
- JLZALTSJCUTKBP-UHFFFAOYSA-N 3-butyl-4-hydroxy-1-phenyl-1,8-naphthyridin-2-one Chemical compound O=C1C(CCCC)=C(O)C2=CC=CN=C2N1C1=CC=CC=C1 JLZALTSJCUTKBP-UHFFFAOYSA-N 0.000 description 2
- 125000003682 3-furyl group Chemical group O1C([H])=C([*])C([H])=C1[H] 0.000 description 2
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- IWGDPBQTRGLPHM-UHFFFAOYSA-N 4-hydroxy-1-phenyl-1,8-naphthyridin-2-one Chemical compound C12=NC=CC=C2C(O)=CC(=O)N1C1=CC=CC=C1 IWGDPBQTRGLPHM-UHFFFAOYSA-N 0.000 description 2
- 125000000339 4-pyridyl group Chemical group N1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 2
- PRMCQFRCHFAZMP-UHFFFAOYSA-N 7-butyl-8-hydroxy-5-phenylpyrido[2,3-b]pyrazin-6-one Chemical compound O=C1C(CCCC)=C(O)C2=NC=CN=C2N1C1=CC=CC=C1 PRMCQFRCHFAZMP-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 206010006482 Bronchospasm Diseases 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OVBJJZOQPCKUOR-UHFFFAOYSA-L EDTA disodium salt dihydrate Chemical compound O.O.[Na+].[Na+].[O-]C(=O)C[NH+](CC([O-])=O)CC[NH+](CC([O-])=O)CC([O-])=O OVBJJZOQPCKUOR-UHFFFAOYSA-L 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- NTYJJOPFIAHURM-UHFFFAOYSA-N Histamine Chemical compound NCCC1=CN=CN1 NTYJJOPFIAHURM-UHFFFAOYSA-N 0.000 description 2
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- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 2
- 208000019693 Lung disease Diseases 0.000 description 2
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- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 230000007815 allergy Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
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- BGAZYNPWNRLZTD-UHFFFAOYSA-N chembl66320 Chemical compound O=C1N(C=2C=CC=CC=2)C2=NC=CC=C2C(O)=C1C1=CC=CC=N1 BGAZYNPWNRLZTD-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OAYLNYINCPYISS-UHFFFAOYSA-N ethyl acetate;hexane Chemical compound CCCCCC.CCOC(C)=O OAYLNYINCPYISS-UHFFFAOYSA-N 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000008101 lactose Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- AXGIPHPYUGSTCA-UHFFFAOYSA-N methyl 2-(3-methylsulfanylanilino)pyridine-3-carboxylate Chemical compound COC(=O)C1=CC=CN=C1NC1=CC=CC(SC)=C1 AXGIPHPYUGSTCA-UHFFFAOYSA-N 0.000 description 2
- ANJRHIXEBGXIIV-UHFFFAOYSA-N methyl 3-anilinopyrazine-2-carboxylate Chemical compound COC(=O)C1=NC=CN=C1NC1=CC=CC=C1 ANJRHIXEBGXIIV-UHFFFAOYSA-N 0.000 description 2
- CMITUAXQMWSHLL-UHFFFAOYSA-N methyl 3-bromopyrazine-2-carboxylate Chemical compound COC(=O)C1=NC=CN=C1Br CMITUAXQMWSHLL-UHFFFAOYSA-N 0.000 description 2
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 description 2
- 239000007922 nasal spray Substances 0.000 description 2
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- 239000012044 organic layer Substances 0.000 description 2
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- 239000011591 potassium Substances 0.000 description 2
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- 238000002360 preparation method Methods 0.000 description 2
- QELSKZZBTMNZEB-UHFFFAOYSA-N propylparaben Chemical compound CCCOC(=O)C1=CC=C(O)C=C1 QELSKZZBTMNZEB-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
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- 125000000175 2-thienyl group Chemical group S1C([*])=C([H])C([H])=C1[H] 0.000 description 1
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- 125000001541 3-thienyl group Chemical group S1C([H])=C([*])C([H])=C1[H] 0.000 description 1
- DHSUHPJUEBYIIS-UHFFFAOYSA-N 4-hydroxy-1-phenyl-3-prop-2-enyl-1,8-naphthyridin-2-one Chemical compound C12=NC=CC=C2C(O)=C(CC=C)C(=O)N1C1=CC=CC=C1 DHSUHPJUEBYIIS-UHFFFAOYSA-N 0.000 description 1
- AEXJAEADPYRPSX-UHFFFAOYSA-N 4-hydroxy-3-(2-hydroxyethyl)-1-phenyl-1,8-naphthyridin-2-one Chemical compound O=C1C(CCO)=C(O)C2=CC=CN=C2N1C1=CC=CC=C1 AEXJAEADPYRPSX-UHFFFAOYSA-N 0.000 description 1
- CXVSULTXGLIXRN-UHFFFAOYSA-N 7-oxa-5-azabicyclo[4.1.0]hepta-1(6),2,4-triene Chemical compound C1=CN=C2OC2=C1 CXVSULTXGLIXRN-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 206010002198 Anaphylactic reaction Diseases 0.000 description 1
- 208000009079 Bronchial Spasm Diseases 0.000 description 1
- 208000014181 Bronchial disease Diseases 0.000 description 1
- 241000700198 Cavia Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 208000004880 Polyuria Diseases 0.000 description 1
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical group C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 1
- 101100386054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CYS3 gene Proteins 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- BHELZAPQIKSEDF-UHFFFAOYSA-N allyl bromide Chemical compound BrCC=C BHELZAPQIKSEDF-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000202 analgesic effect Effects 0.000 description 1
- 230000002052 anaphylactic effect Effects 0.000 description 1
- 230000036783 anaphylactic response Effects 0.000 description 1
- 208000003455 anaphylaxis Diseases 0.000 description 1
- 230000002804 anti-anaphylactic effect Effects 0.000 description 1
- 230000001078 anti-cholinergic effect Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 239000008228 bacteriostatic water for injection Substances 0.000 description 1
- 229960000686 benzalkonium chloride Drugs 0.000 description 1
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007885 bronchoconstriction Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003874 central nervous system depressant Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 229940124569 cytoprotecting agent Drugs 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZKQFHRVKCYFVCN-UHFFFAOYSA-N ethoxyethane;hexane Chemical compound CCOCC.CCCCCC ZKQFHRVKCYFVCN-UHFFFAOYSA-N 0.000 description 1
- IUDKTVXSXWAKJO-UHFFFAOYSA-N ethyl 2-pyridin-2-ylacetate Chemical compound CCOC(=O)CC1=CC=CC=N1 IUDKTVXSXWAKJO-UHFFFAOYSA-N 0.000 description 1
- 239000002024 ethyl acetate extract Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000007903 gelatin capsule Substances 0.000 description 1
- 229960002449 glycine Drugs 0.000 description 1
- 235000013905 glycine and its sodium salt Nutrition 0.000 description 1
- 230000002140 halogenating effect Effects 0.000 description 1
- 229960001340 histamine Drugs 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- GWNVDXQDILPJIG-NXOLIXFESA-N leukotriene C4 Chemical compound CCCCC\C=C/C\C=C/C=C/C=C/[C@H]([C@@H](O)CCCC(O)=O)SC[C@@H](C(=O)NCC(O)=O)NC(=O)CC[C@H](N)C(O)=O GWNVDXQDILPJIG-NXOLIXFESA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- INCSQLZZXBPATR-UHFFFAOYSA-N methyl 3-aminopyrazine-2-carboxylate Chemical compound COC(=O)C1=NC=CN=C1N INCSQLZZXBPATR-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 description 1
- 239000004292 methyl p-hydroxybenzoate Substances 0.000 description 1
- 229960002216 methylparaben Drugs 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 150000005054 naphthyridines Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000001129 nonadrenergic effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004533 oil dispersion Substances 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 239000006186 oral dosage form Substances 0.000 description 1
- 239000000668 oral spray Substances 0.000 description 1
- 229940041678 oral spray Drugs 0.000 description 1
- 239000008194 pharmaceutical composition Substances 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 229940096826 phenylmercuric acetate Drugs 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 125000001325 propanoyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000010232 propyl p-hydroxybenzoate Nutrition 0.000 description 1
- 239000004405 propyl p-hydroxybenzoate Substances 0.000 description 1
- 229960003415 propylparaben Drugs 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008174 sterile solution Substances 0.000 description 1
- 239000008227 sterile water for injection Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 101150035983 str1 gene Proteins 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006208 topical dosage form Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000001665 trituration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
- C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D241/24—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D241/26—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with nitrogen atoms directly attached to ring carbon atoms
Abstract
Certain substituted 1,8-naphthyridines and 1,5,8-azanaphthyridines are useful for treating allergic reactions in mammals. Certain of the compounds may also be utilized to treat chronic obstructive lung diseases in mammals.
Methods for preparing the compounds and methods for their use are also described.
Description
This application is a division of U.S. Ser. No. 533,674 filed Sept. 19, 1983, now U.S. Pat. No. 4,492,702, which in turn is a continuation-in-part of U.S. Ser. No. 438,681 filed Nov. 3, 1982, now abandoned.
Japanese patent public disclosure (Kokai) No. 116495/77, Sept. 29, 1977 discloses various naphthyridine derivatives which allegedly possess analgesic, anti-inflammatory, central nervous system depressant and diuretic effects. There is no indication that the compounds disclosed in the Japanese publication have activity against chronic obstructive lung diseases such as asthma, bronchitis and the like or that these compounds would be useful for treating allergic reactions.
The invention sought to be patented in its first pharmaceutical method aspect is a method for treating allergic reactions in a mammal which method comprises administering an antiallergic effective amount of a compound having the structural formula I ##STR1## wherein X is CH or N;
Y is hydrogen, hydroxy, benzyloxy, amino, sulfamyl, halogen, nitro, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, carboxylic acyl having from 2 to 6 carbon atoms, alkyl--S(O)m -- having from 1 to 6 carbon atoms wherein m is 0, 1 or 2, trifluoromethyl, trifluoromethylthio, or COOA wherein A is hydrogen, alkyl having from 1 to 6 carbon atoms or a cation derived from a pharmaceutically acceptable metal or an amine;
Z is hydrogen, hydroxy, halogen, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, hydroxyalkyl having from 1 to 6 carbon atoms, or carboxylic acyloxy having from 2 to 6 carbon atoms;
R1 is alkenyl having from 2 to 10 carbon atoms, alkynyl having from 2 to 10 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms, cycloalkenyl having from 5 to 8 carbon atoms, 2-, 3- or 4-pyridyl, 2-,4-,5- pyrimidyl, 2- or 3- thionyl, 2- or 3- furanyl, carboxylic acyl having from 2 to 6 carbon atoms, or alkyl having from 1 to 10 carbon atoms which may be substituted with --COOH, hydroxy, halogen, alkoxy having from 1 to 6 carbon atoms, phenyl, 2-, 3- or 4-pyridyl, 2-, 4- or 5- pyrimidyl, 2- or 3- thienyl, 2- or 3-furanyl, carboxylic acyl having from 2 to 6 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms or carboxylic acyloxy having from 1 to 6 carbon atoms;
R2 is hydrogen, alkenyl having from 3 to 8 carbon atoms, alkynyl having from 3 to 8 carbon atoms, carboxylic acyl having from 1 to 6 carbon atoms, Ra Rb N(CH2)n --(wherein Ra and Rb are hydrogen, alkyl having from 1 to 6 carbon atoms or may be joined to complete a piperidine, morpholine, piperazine or pyrrolidine ring and n is an integer of from 2 to 6), hydroxyalkyl having from 2 to 6 carbon atoms, dihydroxyalkyl having from 2 to 6 carbon atoms, hydroxyalkoxyalkyl having from 2 to 8 carbon atoms, or a cation derived from a pharmaceutically acceptable metal
or an amine; with the proviso that when X is CH, Y and Z are both hydrogen and R1 is n-butyl; R2 is not hydrogen or a cation derived from a pharmaceutically acceptable metal or an amine and with the further proviso that when X is CH, Y and Z are both hydrogen, and R1 is n-butyl; R2 is not allyl.
The preferred value for X is CH.
The preferred values for Y are hydrogen, methoxy, trifluoromethyl, methylthio; the more preferred value is hydrogen.
The preferred values for Z are hydrogen and methyl.
The preferred values for R1 are n-alkyl having from 3 to 5 carbon atoms, alkenyl having from 3 to 4 carbon atoms, omega-hydroxyalkyl having 2 to 4 carbon atoms, and omega-carboxylicacyloxyalkyl having from 6 to 9 carbon atoms; the most preferred values are n-butyl, propen-2-yl, 2-hydroxyethyl, 3-hydroxypropyl and 4-propanoyloxybutyl.
The preferred values for R2 are hydrogen, carboxylic acyl of from 2 to 4 carbon atoms, hydroxyalkyl of from 2 to 4 carbon atoms, Ra Rb N(CH2)n --(wherein Ra and Rb are hydrogen or alkyl having from 1 to 6 carbon atoms and n is an integer from 2 to 6 carbon atoms) and the cations derived from sodium, potassium, calcium, ethanolamine, N-methylglucamine, diethanolamine, ethylenediamine, tris-(hydroxymethyl)aminomethane and lysine; the most preferred values are hydrogen, ethanoyl, propanoyl, 2-hydroxyethyl, and the cations derived from sodium, N-methylglucamine and lysine.
Preferred methods of the invention for treating allergic reactions in a mammal comprise the administration of an antiallergic effective amount of a compound chosen from among those having the formula Ia -If : ##STR2## wherein R2 is hydrogen or the sodium cation.
The invention sought to be patented in its second pharmaceutical method aspect is a method for treating chronic obstructive lung disease in a mammal which method comprises administering an anti-chronic lung disease effective amount of a compound having the structural formula I.
Preferred methods of the invention for treating chronic obstructive lung disease in a mammal comprise the administration of an antichronic lung disease effective amount of a compound chosen from among those having the structural formulae Ia -If.
Certain of the compounds which are utilized in the methods of the invention are disclosed in Japanese patent public disclosure (Kokai) No. 116495/77, Sept. 29, 1977. The majority of the compounds utilized in the methods herein are novel in view of this publication.
The compounds which are utilized in the methods of the invention may be prepared by methods known to those skilled in the art. For example, a compound having structural formula II ##STR3## wherein X, Y and Z are defined hereinabove and R is any convenient alkyl group may be reacted with a compound having structural formula III
R.sub.1 CH.sub.2 CO.sub.2 R III
to directly produce the desired compounds wherein R2 is hydrogen. This reaction is preferably accomplished by contacting the two reactants in the presence of a base such as a metal alkoxide e.g. potassium tertiary butoxide or the like, at an elevated temperature e.g. 60° to about 160° C. for a sufficient time until the reaction is substantially completed. The reaction is preferably conducted in an inert atmosphere such as nitrogen. Alternatively, the reaction may be conducted in the presence of a non-reactive solvent such as toluene, xylene etc. The so produced compounds having structural formula I wherein R2 is hydrogen may be converted to compounds having other disclosed values of R2 by standard procedures such as acylation, alkylation and the like.
Certain substituents present in the R1 group may be interconverted by standard procedures, if desired, subsequent to the above described ring closure reaction. For example, a hydroxyl substituent may be converted to a halogen substituent such as a chlorine substituent by treatment with a halogenating agent such as thionyl chloride. Other such interconversions are contemplated herein and will be familiar to those skilled in the art.
The starting materials having structural formulas II and III are known in the art. For example, 2-phenylamino-3-pyridine carboxylic acids (II, X═CH) may be prepared as described in U.S. Reissue Pat. No. 26,655. The relevant teachings of this patent are incorporated herein by reference. The requisite 2-phenylamino-3-pyrazine carboxylate esters (II, X═N) may be prepared substantially as described herein starting with a 2-amino-3-pyrazine carboxylate ester. 2-phenylamino-3-pyrazine carboxylic acid is a known compound, C.A., 75, 20154e (1971). The esters, III, may be prepared by standard procedures.
When utilized herein and in the appended claims the below listed terms, unless specified otherwise, are defined as follows:
halogen--fluorine, chlorine, bromine and iodine;
alkyl--straight and branched carbon chains containing from 1 to 10 carbon atoms;
hydroxyalkyl and dihydroxyalkyl having from 2 to 6 carbons--hydroxyalkyl and dihydroxyalkyl groups wherein the hydroxy group(s) is not substituted at the position alpha to the oxygen to which the R2 group is attached.
R2 is alkenyl and alkynyl having from 3 to 8 carbon atoms-alkenyl and alkynyl groups wherein the unsaturation is not at the position alpha to the oxygen to which the R2 group is attached.
Pharmaceutically acceptable metal and amine--metals and amines that are generally recognized as being non toxic, such as sodium, potassium, calcium, aluminum, N-methylglucamine, lysine and the like.
The active compounds utilized in the methods of this invention, are substituted 1,8-naphthyridines and substituted 1,5,8-azanaphthyridines and may exist as solvates, for example as hydrates. The compounds are useful for treating chronic obstructive lung diseases such as asthma, bronchitis and the like because they have been shown by standard test procedures to inhibit the release of mediators such as SRS-A (slow reacting substance of anaphylaxis) and histamine and to antagonize the action of SRS-A on respiratory tissue. These chronic obstructive lung diseases can result from allergic reactions or have non-allergic causes. The compounds used in the methods of this invention can thus be used to treat allergy caused diseases and their preferred use is for treating allergic chronic obstructive lung diseases. Chronic obstructive lung disease as used herein means disease conditions in which the passage of air through the lungs is obstructed or diminished such as is the case in asthma, bronchitis and the like.
The anti-allergy method of the invention is identified by tests which measure a compound's inhibition of anaphylactic bronchospasm in sensitized guinea pigs having antigen induced SRS-A bronchoconstriction. The compounds are orally effective non-adrenergic, non-anticholinergic antianaphylactic agents. When administered orally they are active at dosages of from about 2 to 100 mg/kg of body weight; when administered parenterally, e.g. intravenously, the compounds are active at dosages of from about 1 to 10 mg/kg body weight.
In in vitro tests, the compounds utilized in the methods of this invention antagonize contractions of lung parenchymal strips caused by leukotriene C4. They are found to be active from these and other tests, as well as by comparison with compounds known to be effective for treating chronic obstructive lung diseases such as asthma or bronchitis. In the preferred anti-allergy use, the compounds of this invention are used to treat allergic patients by administering an anti-allergy effective amount thereof. The allergies treated can be, for example, asthma, as well as other chronic obstructive lung diseases.
Certain of the compounds described herein possess gastrointestinal cytoprotectant effects.
The active compounds can be administered orally, topically, parenterally, or by oral or nasal inhalation. The preferred mode of administration is orally.
The amount and frequency of administration will be regulated accordingly to the judgement of the attending clinician considering such factors as age, condition and size of the patient as well as severity of the disease being treated. A typical recommended dosage regimen is oral administration of from 200 to 1500 mg/day, preferably 500 to 800 mg/day, in two to four divided doses to achieve relief of the symptoms.
The compounds can be administered in conventional oral dosage forms such as capsules, tablets, pills, powders, suspensions or solutions prepared with conventional pharmaceutically acceptable excipients and additives, using conventional techniques. Parenteral preparations, i.e. sterile solutions or suspensions are also made by conventional means. Inhalation administration can be in the form of a nasal or oral spray. Insufflation is also contemplated. Topical dosage forms can be creams, ointments, lotions and the like. Other dosage forms which can be used are transdermal devices.
The following examples illustrate the preparation of the compounds used in the methods of this invention as well as pharmaceutical compositions containing the compounds. All temperatures are in degrees Celsius.
To a stirred solution of 11 g. of methyl 2-(3-methylthiophenylamino)-3-pyridine carboxylate in 110 ml. of ethyl caproate there is added, portionwise, 8.96 g. of potassium tertiary butoxide in an atmosphere of nitrogen. The reaction mixture is heated to an internal temperature of 140°-142° for two hours, cooled and the potassium salt is collected by filtration. The crude potassium salt is dissolved in 150 ml of water, acidified with 10% hydrochloric acid and the product filtered and dried; weight 12.1 g., m.p. 245°-246° C. Recrystallization from pyridine-ether gives a colorless solid, m.p. 245°-246° C.
Prepare the 3-(n-butyl)-4-hydroxy-1-phenyl-1,8-naphthyridin-2(1H)one by the process of Example 1 by replacing the methyl 2-(3-methylthiophenylamino)-3-pyridine carboxylate with an equivalent amount of methyl 2-phenylamino-3-pyridine carboxylate.
To a stirred solution of 1 kg. of methyl 2-phenylamino-3-pyridine carboxylate in 3.97 liters of n-butyl acetate there is added portionwise, 1.1 kg. of potassium tertiary butoxide. After the addition of the potassium tertiary butoxide, there is added an additional 1.32 liters of n-butyl acetate. The reaction mixture is heated to reflux for 20 hours during which the internal temperature of the reaction mixture rose from 90° C. to 122° C. During this period, 1.8 liters of liquid is removed from the reaction mixture via a Dean-Stark trap. Xylene (3.0 liters) is added to the reaction mixture and the remainder of the n-butyl acetate is removed via the Dean-Stark trap. The reaction mixture is cooled and the potassium salt is collected by filtration, washed with toluene and air dried. The crude potassium salt is dissolved in 12 liters of water, the aqueous solution is extracted with toluene, acidified to pH 2 and the product filtered and dried; weight 937 g., m.p. 311°-313° C.
To a mixture of 62 g. of 4-hydroxy-1-phenyl-1,8-naphthyridin-2(1H)-one, 39.6 g. of anhydrous potassium carbonate and 1,800 ml of acetone there is added dropwise, with stirring, 37.5 g. of allyl bromide. The reaction mixture is refluxed for 22 hours, concentrated in vacuo, and the residue extracted with 600 ml. of chloroform. The organic extract is washed with water, 1N sodium hydroxide solution and again with water, dried over anhydrous magnesium sulfate, filtered and concentrated. The crude solid is triturated with 3×400 ml of boiling isopropyl ether, filtered, yielding the insoluble product, wt. 38.5 g. m.p. 171°-174°. Recrystallization from methanol produces the product as a colorless solid, m.p. 176°-177° C.
A mixture of 33.8 g. of 4-(2-propenyloxy)-1-phenyl-1,8-naphthyridin-2(1H)-one and 35 ml. of acetic anhydride is refluxed for four hours. On cooling, the reaction mixture solidified. Trituration with isopropyl ether and filtration yields the product, 36.1 g., as a colorless solid, m.p. 189°-195° C. Recrystallization from ethanol provides the product of this example melting at 195°-196° C.
A mixture of 6.0 g. of 4-acetoxy-1-phenyl-3-(2-propenyl)-1,8-naphthyridin-2(1H)-one, 200 ml. of ethanol and 40 ml. of 1N sodium hydroxide solution is stirred at room temperature for 22 hours. The ethanol is removed in vacuo and the remaining aqueous solution acidified with 1N hydrochloric acid. The product is filtered, washed with water and dried, weight 5.3 g., m.p. 248°-250° C. Recrystallization from chloroform yields the product of this example as a colorless solid, m.p. 250°-252° C.
To a stirred mixture of 12.7 g. of methyl 2-amino pyrazine 3-carboxylate and 47 ml. of 48% hydrobromic acid there is added, dropwise, 12.6 ml. of bromine keeping the temperature at 0°. A solution of 14.4 g. of sodium nitrite in 60 ml. of water is then added, dropwise, at 0° and the reaction mixture stirred for 15 minutes. The reaction mixture is basified to pH 8 with sodium bicarbonate and extracted with ethyl acetate and again with chloroform. The organic layers are dried over magnesium sulfate, filtered and concentrated to a yellow oil. Recrystallization from ether-hexane yields the product, m.p. 43°-45° C.
A mixture of 9.5 g. of methyl 2-bromo-3-pyrazine carboxylate, 8.2 g. of aniline, 0.5 g. of p-toluene sulfonic acid and 100 ml. of water is stirred and refluxed for two hours. The reaction mixture is poured on ice, extracted with ethyl acetate, the organic extracts are dried and concentrated to yield an oil. The crude residue is eluted on a silica gel column with ethylacetate-hexane (1:2) yielding the product of this example as a yellow solid, m.p. 72°-75° C.
A mixture of 3.5 g. of methyl 2-phenylamino-3pyrazine carboxylate, 30 ml. of ethyl caproate and 4 g. of potassium tertiary butoxide is stirred and heated under nitrogen at 150°-160° for one and a half hours. The reaction mixture is poured on ice, extracted with ethyl acetate and the ethyl acetate extracts washed with water. The combined aqueous layers are acidified to pH 5.5 with dilute hydrochloric acid and the solid filtered. Recrystallization from ethyl acetate-hexane yields the product of this example as a colorless solid; m.p. 183°-185° C.
To a solution of 6.8 g. of methyl 2-phenyl-amino-3-pyridine carboxylate in 60 ml. of gamma-butyrolactone there is added, under nitrogen, 13.4 g. of potassium tertiary butoxide. The reaction mixture is heated and stirred for one hour at 95° C., poured on ice and stirred overnite. The mixture is extracted with ether, the aqueous layer acidified with acetic acid to pH 4.5 and the product is collected by filtration. Recrystallization from chloroform, acetone, isopropanol yields the product of this example as a colorless solid; m.p. 235°-236° C.
To a stirred solution of 5.8 gm of methyl 2-phenylamino-3-pyridine carboxylate and 25 gm of ethyl 2-pyridylacetate there is added, portionwise, 5.7 gm of potassium tertiary butoxide under a nitrogen atmosphere. The system is heated to an internal temperature of 105° C. for 10 minutes. The reaction is cooled to room temperature, diluted with 100 ml of diethyl ether and the brown precipitate collected by filtration. The precipitate is washed with 200 ml water and the filtrate is acidified to pH 3-4 with a 15% HCl solution whereupon the product separates. The precipitate is filtered and dried to give 6.3 gm of crude 4-hydroxy-1-phenyl-3-(2-pyridyl)-1,8-naphthyridin-2(1H)one; recrystallization from pyridine yields the title product; m.p. 332°-333° C.
Reflux a stirred solution of 16.2 gm of 3-(n-butyl)-4-hydroxy-1-phenyl-1,8-naphthyridin-2(1H)one and 11.4 gm of anhydrous potassium carbonate powder in 600 ml of dry acetone for 30 minutes. 95% 2-bromoethanol (10.3 gm) is added dropwise to the solution. The reaction is refluxed for 26 hours, cooled and the solvent removed by stripping. The resulting solid is dissolved in 500 ml chloroform and the chloroform solution is washed with 300 ml water, twice with 100 ml of 0.5N sodium hydroxide solution and finally with 100 ml of water. The chloroform solution is dried over magnesium sulfate, filtered and the solvent is removed to give the crude product. The crude product is triturated with warm isopropyl ether to give 10.9 gm of the 3-(n-butyl)-4-(2-hydroxyethoxy)-1-phenyl-1,8-naphthyridin-2(1H)one; which after recrystallization from acetone melts at 138°-140° C.
To a mixture of 6.8 g. of 3-(n-Butyl)-4-(2-hydroxyethoxy)-1-phenyl-1,8-naphthyridin-2(1H)one and 150 ml of anhydrous dioxane is added 0.8 g. of sodium hydride (60% oil dispersion) with stirring. The reaction mixture is stirred and warmed on a steam bath for 30 minutes, followed by dropwise addition of 2.6 g. of 95% 2-bromoethanol. The reaction mixture is stirred and refluxed for 24 hours, the solvent is removed in vacuo and the residual solid is dissolved in chloroform. The chloroform solution is successively washed with water, 0.5N sodium hydroxide and water, the organic layer is dried over magnesium sulfate, filtered and concentrated to dryness to yield the product of this example.
The following formulations exemplify some of the dosage forms of the compositions of this invention. In each, the term "active compound" designates a compound of formula I.
______________________________________ Tablets No. Ingredient mg/tablets mg/tablet ______________________________________ 1. Active compound 100 500 2. Lactose USP 122 113 3. Corn Starch, Food Grade, 30 40 as a 10% paste in Purified Water 4. Corn Starch, Food Grade 45 40 5. Magnesium Stearate 3 7 Total 300 700 ______________________________________
Method of Manufacture
Mix Item Nos. 1 and 2 in a suitable mixture for 10-15 minutes. Granulate the mixture with Item No. 3. Mill the damp granules through a coarse screen (e.g., 1/4") if needed. Dry the damp granules. Screen the dried granules if needed and mix with Item No. 4 and mix for 10-15 minutes. Add Item No. 5 and mix for 1-3 minutes. Compress the mixture to appropriate size and weight on a suitable tablet machine.
______________________________________ Capsules No. Ingredient mg/capsule mg/capsule ______________________________________ 1. Active compound 100 500 2. Lactose USP 106 123 3. Corn Starch, Food Grade 40 70 4. Magnesium Stearate NF 4 7 Total 250 700 ______________________________________
Method of Manufacture
Mix Item Nos. 1, 2 and 3 in a suitable blender for 10-15 minutes. Add Item No. 4 and mix for 1-3 minutes. Fill the mixture into suitable two-piece hard gelatin capsules on a suitable encapsulating machine.
______________________________________ Parenteral Ingredient mg/vial mg/vial ______________________________________ Active Compound Sterile Powder 100 500 ______________________________________
Add sterile water for injection or bacteriostatic water for injection for reconstitution.
______________________________________ Injectable Ingredient mg/vial mg/vial ______________________________________ Active Compound 100 500 Methylparaben 1.8 1.8 Propylparaben 0.2 0.2 Sodium Bisulfite 3.2 3.2 Disodium Edetate 0.1 0.1 Sodium Sulfate 2.6 2.6 Water for Injection q.s. ad 1.0 ml 1.0 ml ______________________________________
Method of Manufacture
1. Dissolve parabens in a portion (85% of the final volume) of the water for injection at 65°-70° C.
2. Cool to 25°-35° C. Charge and dissolve the sodium bisulfite, disodium edetate and sodium sulfate.
3. Charge and dissolve drug.
4. Bring the solution to final volume by added water for injection.
5. Filter the solution through 0.22 membrane and fill into appropriate containers.
6. Terminally sterilize the units by autoclaving.
______________________________________ Nasal Spray mg/ml ______________________________________ Active Compound 10.0 Phenyl Mercuric Acetate 0.02 Aminoacetic Acid USP 3.7 Sorbitol Solution 57.0 Benzalkonium Chloride Solution 0.2 Sodium Hydroxide 1N Solution to -- adjust pH Water Purified USP to make 1.0 ml ______________________________________
Claims (41)
1. A method for treating allergic reactions in a mammal which method comprises administering an anti-allergic effective amount of a compound having the structural formula I ##STR4## wherein X is N;
Y is hydrogen, hydroxy, benzyloxy, amino, sulfamyl, halogen, nitro, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, carboxylic acyl having from 2 to 6 carbon atoms, alkyl--S(O)m -- having from 1 to 6 carbon atoms wherein m is 0, 1 or 2, trifluoromethyl, trifluoromethylthio, or COOA wherein A is hydrogen, alkyl having from 1 to 6 carbon atoms or a cation derived from a pharmaceutically acceptable metal or an amine;
Z is hydrogen, hydroxy, halogen, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, hydroxyalkyl having from 1 to 6 carbon atoms, or carboxylic acyloxy having from 2 to 6 carbon atoms;
R1 is alkenyl having from 2 to 10 carbon atoms, alkynyl having from 2 to 10 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms, cycloalkenyl having from 5 to 8 carbon atoms, carboxylic acyl having from 2 to 6 carbon atoms or alkyl having from 1 to 10 carbon atoms which may be substituted with hydroxy, halogen, alkoxy having from 1 to 6 carbon atoms, phenyl, carboxylic acyl having from 2 to 6 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms or carboxylic acyloxy having from 1 to 6 carbon atoms;
R2 is hydrogen, carboxylic acyl having from 1 to 6 carbon atoms, alkenyl having from 3 to 8 carbon atoms, alkynyl having from 3 to 8 carbon atoms, Ra Rb N(CH2)n -- (wherein Ra and Rb are hydrogen, alkyl having from 1 to 6 carbon atoms and n is an integer of from 2 to 6) hydroxyalkyl having from 2 to 6 carbon atoms, dihydroxyalkyl having from 2 to 6 carbon atoms, hydroxyalkoxyalkyl having from 2 to 8 carbon atoms, or a cation derived from a pharmaceutically acceptable metal or an amine.
2. The method defined in claim 1 wherein R1 is n-alkyl having from 3 to 5 carbon atoms.
3. The method defined in claim 1 wherein R1 is n-alkenyl having from 3 to 4 carbon atoms.
4. The method defined in claim 1 wherein R1 is --CH2 CH═CH2.
5. The method defined in claim 1 wherein R1 is 3-hydroxypropyl.
6. The method defined in claim 1 wherein R2 is hydrogen or the sodium cation.
7. The method defined in claim 1 wherein R2 is carboxylic acyl having from 2 to 4 carbon atoms.
8. The method defined in claim 1 wherein R2 is --COCH3.
9. The method defined in claim 1 wherein R2 is --COC2 H5 or --CH2 --CH2 --OH2.
10. A compound having the structural formula I ##STR5## wherein X is N;
Y is hydrogen, hydroxy, benzyloxy, amino, sulfamyl, halogen, nitro, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, carboxylic acyl having from 2 to 6 carbon atoms, alkyl--S(O)m -- having from 1 to 6 carbon atoms wherein m is 0, 1 or 2, trifluoromethyl, trifluoromethylthio, or COOA wherein A is hydrogen, alkyl having from 1 to 6 carbon atoms or a cation derived from a pharmaceutically acceptable metal or an amine;
Z is hydrogen, hydroxy, halogen, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, hydroxyalkyl having from 1 to 6 carbon atoms, or carboxylic acyloxy having from 2 to 6 carbon atoms;
R1 is alkenyl having from 2 to 10 carbon atoms, alkynyl having from 2 to 10 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms, cycloalkenyl having from 5 to 8 carbon atoms, carboxylic acyl having from 3 to 6 carbon atoms or alkyl having from 1 to 10 carbon atoms which may be substituted with a substituent selected from hydroxy, halogen, alkoxy having from 1 to 6 carbon atoms, phenyl, carboxylic acyl having from 2 to 6 carbon atoms, cycloalkyl having from 3 to 7 carbon atoms or carboxylic acyloxy having from 1 to 6 carbon atoms;
R2 is hydrogen, carboxylic acyl having from 1 to 6 carbon atoms, alkenyl having from 3 to 8 carbon atoms, alkynyl having from 3 to 8 carbon atoms, Ra Rb N(CH2)n -- (wherein Ra and Rb are hydrogen, alkyl having from 1 to 6 carbon atoms and n is an integer of from 2 to 6) hydroxyalkyl having from 2 to 6 carbon atoms, dihydroxyalkyl having from 2 to 6 carbon atoms, hydroxyalkoxyalkyl having from 2 to 8 carbon atoms, or a cation derived from a pharmaceutically acceptable metal or an amine.
11. A compound having the structural formula defined in claim 10 wherein R1 is alkenyl having from 2 to 10 carbon atoms.
12. A compound having the structural formula defined in claim 11 wherein R1 is 2-propenyl.
13. A compound having the structural formula defined in claim 10 wherein R1 is alkynyl having from 2 to 10 carbon atoms.
14. A compound having the structural formula defined in claim 10 wherein R1 is cycloalkyl having from 3 to 8 carbon atoms.
15. The method defined in claim 1 wherein Z is hydrogen.
16. A compound having the structural formula defined in claim 10 wherein R1 is alkyl having from 1 to 10 carbon atoms which is substituted with a substituent selected from hydroxy, halogen, alkoxy having from 1 to 6 carbon atoms, phenyl, cycloalkyl having from 3 to 7 carbon atoms or carboxylic acyloxy having from 1 to 6 carbon atoms.
17. A compound having the structural formula defined in claim 16 wherein R1 is 2-hydroxyethyl.
18. A compound having the structural formula defined in claim 16 wherein R1 is 4-propionyloxybutyl.
19. A compound having the structural formula I ##STR6## wherein X is N;
Y is hydrogen, hydroxy, benzyloxy, amino, sulfamyl, halogen, nitro, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, carboxylic acyl having from 2 to 6 carbon atoms, alkyl--S(O)m -- having from 1 to 6 carbon atoms wherein m is 0, 1 or 2, trifluoromethyl, trifluoromethylthio, or COOA wherein A is hydrogen, alkyl having from 1 to 6 carbon atoms or a cation derived from a pharmaceutically acceptable metal or an amine;
Z is hydrogen, hydroxy, halogen, alkyl having from 1 to 6 carbon atoms, alkoxy having from 1 to 6 carbon atoms, hydroxyalkyl having from 1 to 6 carbon atoms, or carboxylic acyloxy having from 2 to 6 carbon atoms;
R1 is alkyl having from 1 to 10 carbon atoms;
R2 is alkenyl having from 3 to 8 carbon atoms, alkynyl having from 3 to 8 carbon atoms, Ra Rb N(CH2)n -- (wherein Ra and Rb are hydrogen, alkyl having from 1 to 6 carbon atoms and n is an integer of from 2 to 6) hydroxyalkyl having from 2 to 6 carbon atoms, dihydroxyalkyl having from 2 to 6 carbon atoms, hydroxyalkoxyalkyl having from 2 to 8 carbon atoms.
20. A compound having the structural formula defined in claim 19 wherein R1 is n-butyl.
21. A compound having the structural formula defined in claim 19 wherein R2 is alkynyl having from 3 to 8 carbon atoms.
22. A compound having the structural formula defined in claim 19 wherein R2 is Ra Rb N(CH2)n -- wherein Ra and Rb are hydrogen, alkyl having from 1 to 6 carbon atoms and n is an integer of from 2 to 6.
23. A compound having the structural formula defined in claim 19 wherein R2 is hydroxyalkyl having from 2 to 6 carbon atoms.
24. A compound having the structural formula defined in claim 19 wherein R2 is dihydroxyalkyl having from 2 to 6 carbon atoms.
25. A compound having the structural formula defined in claim 19 wherein R2 is hydroxyalkoxyalkyl having from 2 to 8 carbon atoms.
26. The method defined in claim 15 wherein Y is in the ortho position.
27. The method defined in claim 15 wherein Y is in the meta position.
28. The method defined in claim 15 wherein Y is in the para position.
29. A compound having the structural formula defined in claim 10 wherein R2 is carboxylic acyl having from 2 to 4 carbon atoms.
30. Compound having the structural formula defined in claim 10 wherein R2 is hydrogen or the sodium cation.
31. A compound having the structural formula defined in claim 10 wherein R2 is --COCH3.
32. A compound having the structural formula defined in claim 10 wherein R2 is --COC2 H5 or --CH2 CH2 OH.
33. A compound having structural formula formula defined in claim 10 wherein Z is hydrogen.
34. The compounds defined in claim 33 wherein Y is in the ortho position.
35. The compounds defined in claim 33 wherein Y is in the meta position.
36. The compounds defined in claim 33 wherein Y is in the para position.
37. The compounds having the structural formula defined in claim 10 wherein R1 is omega-hydroxyalkyl having from 2 to 4 carbon atoms.
38. The compounds having the structural formula defined in claim 10 wherein R1 is alkenyl having from 3 to 4 carbon atoms.
39. The compounds having the structural formula defined in claim 10 wherein R1 is --CH2 CH═CH2.
40. The compounds having the structural formula defined in claim 10 wherein R1 is 3-hydroxypropyl.
41. The method defined in claim 1 wherein an anti-allergic effective amount of the compound represented by structural formula I is administered together with a pharmaceutically acceptable carrier.
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US06/661,017 US4628055A (en) | 1982-11-03 | 1984-10-15 | Method for treating allergic reactions and compositions therefore |
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US06/661,017 US4628055A (en) | 1982-11-03 | 1984-10-15 | Method for treating allergic reactions and compositions therefore |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4866061A (en) * | 1986-04-11 | 1989-09-12 | Schering Corporation | Aryl-substituted naphthyridine and pyridopyrazine derivatives |
US4897487A (en) * | 1988-04-06 | 1990-01-30 | Schering Corporation | Process for preparing intermediates for pharmaceutically useful bicyclic compounds |
US4902693A (en) * | 1985-07-29 | 1990-02-20 | Schering Corporation | Anti-allergic esters, acetal ethers, thioethers and nitrogen substituted derivatives of bicyclic compounds |
US4917896A (en) * | 1986-08-15 | 1990-04-17 | Nelson Research & Development Co. | Penetration enhancers for transdermal delivery of systemic agents |
US5011860A (en) * | 1986-04-11 | 1991-04-30 | Schering Corporation | Aryl-substituted naphthyridine and pyridopyrazine derivatives and their use in treating hyperproliferative skin diseases |
US5037826A (en) * | 1986-10-15 | 1991-08-06 | Schering Corporation | 1-substituted naphthyridine and pyridopyrazine derivatives |
US5079360A (en) * | 1988-04-06 | 1992-01-07 | Schering Corporation | Processes for preparing bicyclic compounds and intermediates thereof |
US5180823A (en) * | 1988-04-06 | 1993-01-19 | Schering Corporation | Processes for preparing bicyclic compounds |
US8071073B2 (en) | 2004-11-24 | 2011-12-06 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
US8758816B2 (en) | 2004-11-24 | 2014-06-24 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
US10064817B2 (en) | 2004-11-24 | 2018-09-04 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
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JPS5854152A (en) * | 1981-09-28 | 1983-03-31 | 日東電工株式会社 | Laminate waterproof execution |
US4452800A (en) * | 1982-04-26 | 1984-06-05 | Schering Corporation | Salts of 3(n-butyl)-4-hydroxy-1-phenyl-1,8-naphthyridine-2(1H)-one and their use in treating chronic obstructive lung diseases |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4902693A (en) * | 1985-07-29 | 1990-02-20 | Schering Corporation | Anti-allergic esters, acetal ethers, thioethers and nitrogen substituted derivatives of bicyclic compounds |
US4866061A (en) * | 1986-04-11 | 1989-09-12 | Schering Corporation | Aryl-substituted naphthyridine and pyridopyrazine derivatives |
US5011860A (en) * | 1986-04-11 | 1991-04-30 | Schering Corporation | Aryl-substituted naphthyridine and pyridopyrazine derivatives and their use in treating hyperproliferative skin diseases |
US4917896A (en) * | 1986-08-15 | 1990-04-17 | Nelson Research & Development Co. | Penetration enhancers for transdermal delivery of systemic agents |
US5037826A (en) * | 1986-10-15 | 1991-08-06 | Schering Corporation | 1-substituted naphthyridine and pyridopyrazine derivatives |
US5079360A (en) * | 1988-04-06 | 1992-01-07 | Schering Corporation | Processes for preparing bicyclic compounds and intermediates thereof |
US4897487A (en) * | 1988-04-06 | 1990-01-30 | Schering Corporation | Process for preparing intermediates for pharmaceutically useful bicyclic compounds |
US5180823A (en) * | 1988-04-06 | 1993-01-19 | Schering Corporation | Processes for preparing bicyclic compounds |
US8071073B2 (en) | 2004-11-24 | 2011-12-06 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
US8518919B2 (en) | 2004-11-24 | 2013-08-27 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
US8758816B2 (en) | 2004-11-24 | 2014-06-24 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
US9919050B2 (en) | 2004-11-24 | 2018-03-20 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine |
US10064817B2 (en) | 2004-11-24 | 2018-09-04 | Meda Pharmaceuticals Inc. | Compositions comprising azelastine and methods of use thereof |
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